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(11)

EP 3 990 150 A1

(12)

(43) Date of publication: 04.05.2022 Bulletin 2022/18 (21) Application number: 20831300.7 (22) Date of filing: 24.06.2020

(51) International Patent Classification (IPC):  B01D 45/14(2006.01) F25J 3/06(2006.01) B01D 53/24(2006.01) (52) Cooperative Patent Classification (CPC): C10L 3/104; C10L 3/12; C10L 3/105; C10L 2290/06; C10L 2290/10; F25J 2205/10; F25J 3/061; F25J 3/0635; F25J 3/067; F25J 3/066; F25J 2270/12; F25J 2270/42; F25J 2205/20; Y02C 20/40; B01D 2256/245; B01D 2257/504; B01D 53/002; B01D 53/24 (86) International application number: PCT/MY2020/050045 (87) International publication number: WO 2020/263076 (30.12.2020 Gazette 2020/53)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 25.06.2019 MY PI2019003692 (71) Applicant: Petroliam Nasional Berhad (Petronas) 50088 Kuala Lumpur (MY)

(72) Inventors: SURMI, Amiza Kuala Lumpur, 50088 (MY) RAHMAN, Fadhli Hadana Kuala Lumpur, 50088 (MY) KASSIM, Zamzila Kuala Lumpur, 50088 (MY) SALIHUDDIN, Radin Suhaib Kuala Lumpur, 50088 (MY) JALANI, M Yazid Jay B Kuala Lumpur, 50088 (MY) SHUKOR, M Syazwan M Kuala Lumpur, 50088 (MY) OTHMAN, Nurzatil Aqmar Kuala Lumpur, 50088 (MY) NAZIR, Liyana Salwa M Kuala Lumpur, 50088 (MY) NA'IM, Ahmad Syukri Kuala Lumpur, 50088 (MY) (74) Representative: Bradley, Susan Jane  Marks & Clerk LLP Fletcher House The Oxford Science Park Heatley Road Oxford OX4 4GE Oxford OX4 4GE (GB)